Question: Tell me economics crisis whose name has the word period in it.
Paraphrase: Let me know financial matters emergency whose title has the word period in it.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q290178 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'period')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Special Period, Special Period